气泡混合轻质土在地铁高填方路基中的应用

以重庆地铁涂山车辆段高填方路基工程为例,介绍气泡混合轻质土在用地狭小受限地段的应用实例,提出气泡混合轻质土填筑地铁路基的设计要点并进行稳定性验算,通过分析肯定了气泡混合轻质土的耐久性,提出气泡混合轻质土填筑地铁高填方路基的施工及质量控制要求。相对于桩板式挡墙和结构混凝土架空等传统处理方式,气泡混合轻质土填筑地铁受限高填方路基具有施工方便、节约投资、缩短工期的优点,且质量可控度高。

Bubble-Mixed Light Soil Applied in a Metro High-Fill Roadbed

With the Chongqing Tu Hill depot high-fill engineering as an example, this article introduces application examples of bubble-mixed light soil in narrow and restricted areas, and proposes the design points of bubble-mixed light soil filling subway subgrade; in addition, its stability was checked. The durability of bubble-mixed light soil was confirmed via an analysis. This paper also proposes construction and quality control requirements of high-fill roadbeds of bubble-mixed light soil. Compared to pile-sheet retaining walls and structural concrete overhead and other traditional treatment methods, bubble-mixed light soil fill for restricted subway high-fill roadbeds has many advantages such as construction convenience, less costs, shortened construction period, and strong quality control.